Packing for stuffing-boxes



(No Model.)

0. H. ENSIGN &. P. B. WRIGHT. PACKING FDR STUFPING BOXES.

No. 430,313. Patented June 17, 1890@ UNITED STATES PATENT OFFICE.

CHARLES H. ENSIGN, OF TEHESCAL, AND PHIN B. lVRIGHT, OF BERKELEY,CALIFORNIA.

PACKING FOR STU FFlNG-BOXES.

SPECIFICATION forming part of Letters Patent No. 430,313, dated June 17,1890.

Application filed December 18, 1889. Serial No. 334,191. (No model.)

To all whom it may concern: D of metal, which serves to lightly hold theBe it known that we, CHARLES H. ENSIGN, parts together upon the rod.Around all residing at Temescal, and PHIN B. WRIGHT, these parts is thering of compressible materesiding at Berkeley, both in Alameda county,rialsnch as rubber Ewhich lies within the 5 5 State of California,citizens of the United stuffi11g-boxF,being confined and compressedStates, have invented an Improvement in between the flanges a of the rin-sections Packing for Stuffing-Boxes; and we hereby and the gland fofthe box. declare the following to be a full, clear, and G is a severedcontractible band of metal, exact description of the same. whichencircles the outer rounded end of the 10' Our invention relates to thatclass of packring sections and lies under the rubber.

ing for stuffing-boxes in which sectional me- This band has its edges,as shown at g, rivtallic rings fitted to the rod are held in place etedor pivoted together at one end, leaving by an encircling body ofcompressible matethe other end free to contract and expand. rial. Now itwill be seen that by reason of the r 5 Our invention consists in thenovel conoutwardly flaring or beveled edges of the struction of thesectional ring and its arring-sections their interior may Wear, and therangement and combination with surroundexterior rubber band maycontinuously coming parts, hereinafter fully described, and press themupon the. rod without having said specifically pointed out in theclaims. edges come any closer together. Therefore 20 The object of ourinvention is to provide the packing constantly adjusts itself under asimple and effective packing of this class wear and fits the rodproperly at all times. which will maintain its perfect adjustment Theobject of having three sections is to pro during use and consequentwear. vide for taking up the wear all around, and

Referring to the accompanying drawings thus preserve the perfectcircular character 2 for a more complete explanation of our inof theinterior of the ring.

vention, Figure 1 is a central cross-section of The keys 0, whilepermitting the contracour packing, a portion only of the rubber tion ofthe ring, are for the purpose of breakring E being shown, and one of thekeys 0 ing their joints and making the necessary being shown removed,Fig. 2 is a vertical steam-tight joint of the packing. o longitudinalsection of our packing, the lower The band D, in addition to holding thehalf of the metallic packing-ring and the parts together, has for itsmain purpose the band D being in elevation. Fig. 3 is a perkeeping ofthe rubberE out of the joints, and spective view showing two of thesections A the band G has a similar purpose of keeping and one of thekeys C. Fig. 4 is a view of the rubber out of the joints at the end ofthe 5 band D. Fig. 5 is a view of band G. ring, and also preventing itfrom binding too The metallic ring is made in sections A, closely on therod. preferably three in number, of about equal Having thus describedour invention, What size. These sections are concavo-convex, enwe claimas new, and desire to secure by Letabling them to fit about the rod B.Each ters Patent, is o 40 section has a flange a on one end, and thead- 1. An improved stuffing-box consisting of jacent edges of thesections, aswell as the the main sections having recessed adjacentadjacent ends of the flange, are so beveled edges, and having one endflanged and the with respect to each other as to flare outother rounded,independent key-pieces fitted wardly from the inner or concave surfaceto upon the rod between the recesses in the 5 45 the outer or convexsurface. In each side of main sections, a severed contractible band eachsection are made corresponding recesses encircling the sections andkeys, a compressior keyways a, and into these and bridging ble ringexterior of the band and confined the space between the sections are letfreely between the end flanges of the main sections the keys 0,consisting of small curved pieces, and the gland of the stufling-box,and a sec- 50 which lie upon rod B. Encircling the second severedcontraotible band within the tions and keys is a severed contractibleband compressible ring and encircling the rounded ends of the mainsections, substantially as thereby leaving the other edges free 'tocondescribed. tract and expand, substantially as described. 2. Animproved stuffing-box consisting of In witness whereof we have hereuntoset the main sections, the key-sections fitted beour hands. 5 tween themand the encircling contractible ring, in combination with a severed ringwithin the compressible ring between the inner ends of the main sectionsand the gland WVitnesses:

of the stufling-box, said inner ring having its DU RAY SMITH,

so severed edges at one side riveted together, JOHN MARTENS.

